push the envelope片语KK [pʊʃ ðə ˋɛnvəˏlop] /pʊʃ ðə ˈɛnvəˌloʊp/发音片语1突破极限、挑战极限、开拓创新This studio keeps pushing the envelope with its animation techniques.这家工作室在动画技术上不断突破极限。2挑战尺度、踩底线The comedian pushes the envelope with jokes about politics and religion.这位喜剧演员用政治和宗教的笑话挑战尺度。用这个字练口说→